Composition of matter and method of preparing same.



HENRY A. GARDNER, OF WASHINGTON, DISTRICT OF COLUMBIA- COMPOSITION OF MATTER AND METHOD OF PREPARING Sm.

No Drawing.

specification of Letters Patent.

Application filed october 17, 1912. Serial No. 726,355.

To all whom it 171 ay concern Be it known that I, HENRY A. GARDNER, a citizen of the United States, residing at Washington, in the District of Columbia, have invented certain new and useful Improvements in Composition of Matter and Method of Preparing Same, of which the following is a specification. 1

This invention relates to the preparation of resilient and elastic masses or bodies from the so-called Chinese wood oil or tung oil of t'tilllllllel't'e, hereinafter referred to as woodl It is well understood in the arts that wood-oil 'undergoes polymerization when subjected to high temperatures for a sufiicient time, yielding a solid polymerized productwhich is insoluble in all ordinary paint and varnish solvents. as well as in dilute acids and alkalis. It has heretofore been divided materials which are insoluble in the oil and incapable of entering, at least to any substantial degree, into chemical combination therewith, products possessing entlrely' new properties and characteristics may be formed. The new products, like the known polymerized oil, are substantially insoluble in all ordinary paint and varnish solvents, including boiling linseed oil. In physical character they are entirely different from the products of direct polymerization above referrer] to, particularly in that they exhibit a high degree of resilience and elasticity, and a re not agglomerated by simple pressure. These new products are characterlzed by the presence of the filling'material, distributed.

The physical characteristics of the product may vary somewhat with the details of treatment and the proportion and character of the components. Typical illustrative examples of their preparation are as follows, it being understood that the invention is not restricted to the proportions or the details of manipulation given: i

(1) 200 parts by weight of wood-oil are heated to 250 C., and there is added to the Oil and thoroughly incorporated therewith by stirring, parts of lithopone. The

temperature is then raised to 280 or 290 C...

and held at this point for about ten minutes, after which the mass is'permitted to cool.

Patented-Feb. 10,1914. J

The product is a highly resilient and elastic I mass possessing the distinctive characteristics above set forth.

(2) Similar proportions and tempera tures are used, but the mass is maintained at the higher temperature, 280 to 290 C for 30 minutes or until a brown color appears on the surface. The process is aided by introducing a jet of air into the body of oil immediately after the addition of the filling material, the introduction of air being continued until the mass stitfens by polymerization. The air serves the purpose of maintaining the filling material in suspension until polymerization of the oil sets in. The polymerized mass may then be subdivided or granulated, converting it into detached or semi detached particles, in which form it is best suited for certain purposes.

The times and temperatures above noted are to some degree correlative, inasmuch. as similar results maybe obtained by longer treatment at lower temperatures.

Instead of lithopone, I may use other substances-of mineral originwhich are substantially insoluble inthe oil and incapable of chemical reaction therewith,'s1 i'itable materials being baryta, china clay, silica, ground talc, calcium sulfate, and the like, used preferably with asmall percentage of lithopone. Q

The proportion of filling substance. may

be varied materially according. to the intial to the develo ment of the desired properties that the lling material should be distributed through the mass in very finely subdivided or powdered form; for like results are not obtained by impregnating porous or absorbent bodies with the oil and then subjectin the latter to polymerization. In other W01 5, it appears to be essential that the structure of the granule, particle or mass should be essentially that of the polymerized oil carrying discrete particles disseminated through it, rather than that the structure should he that of a coherent, porous body, the pores of which are filled with polymerized product.

I claim:

l. The method of making resilient or elastic masses from wood-oil, which consists in polymerizing the oil while maintaining a1 finely-divided insoluble filling material in suspension therein. and converting it thereby 1nto a polymerized product which 1s msoluble 1n all ordinary 011 and varnlsh solvents.

2. The method of making resilient or elas- LWWM tially of insoluble solid polymerized wood- 1 oil having an insoluble inorganic filling material inseparably incorporated therewith and disseminated therethrough in the form of minute particles.

4. As a new composition of matter, an elastic and resilient granular mass consisting essentially of nsoluble solid polyp.

merized wood-oil having 'an insoluble inorgan'ufilling material, inseparahl incorpirated therewith and'disseminated therethrough in the form of minute particles.

ln testimony whereof I atfix my signature in presence of two witnesses.

HENRY A. GARDNER. Witnesses:

J. H. Bmoiunzsrnm,

(l. V. FOWLER. 

